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Korean J. Met. Mater.
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Author is indexed since 2016
Author :
Hyeon Su Jang
3 Articles
1
Hydrogen Induced Crack Propagation in Bainitic X70 Steel in Hydrogen Pressured Tensile Test
베이나이트계 X70강 수소가압분위기 인장시험의 수소취성균열 전파
Byung Hak Choe, Hyeon Su Jang, Bum Gyu Lee, Eui Soo Kim, Woo Sik Kim, Un Bong Baek, Sung Hoon Nam최병학, 장현수, 이범규, 김의수, 김우식, 백운봉, 남승훈
Korean J. Met. Mater.
2018;56(1):1-7. Published online 2018 Jan 1
DOI:
https://doi.org/10.3365/KJMM.2018.56.1.1
Abstract
This study investigated hydrogen induced cracking (HIC) of X70 steel, used for gas pipeline material, with a bainitic microstructure. The effect of hydrogen on the steel was investigated by tensiletesting in a high pressure hydrogen atmosphere, using OM, SEM and TEM analyses. The mechanisms of hydrogen-related cracking were represented as.....
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Crossref 6
684
Age Hardening and Re-crystallization Softening of a CoCrFeMnNi High Entropy Alloy
고엔트로피 합금강의 시효경화 및 재결정 연화현상
Byung Hak Choe, Hyeon Su Jang, Hyoung Seop Kim, Jong Un Moon최병학, 장현수, 김형섭, 문종언
Korean J. Met. Mater.
2017;55(10):684-688. Published online 2017 Sep 28
DOI:
https://doi.org/10.3365/KJMM.2017.55.10.684
Abstract
Age hardening and re-crystallization softening of a type of high entropy alloy, CoCrFeMnNi, was performed to investigate the relationship between microstructure and the property of mechanical hardness. Equiatomic CoCrFeMnNi was produced by casting followed by homogenizing, cold rolling and post heat treatments. TEM analysis revealed that the microstructure of the.....
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453
Metastable Phase Transformation of Beta Titanium Alloys by Slip Mechanism
베타 타이타늄 합금의 슬립기구에 의한 준안정 상변태
Byung Hak Choe, Hyeon Su Jang, Bum Kyu Lee, Ka Ram Lim, Young Sang Na, Yong Taek Hyun, Seung Eon Kim, Young Uk Kim, Chan Sung Park최병학, 장현수, 이범규, 임가람, 나영상, 현용택, 김승언, 김영욱, 박찬성
Korean J. Met. Mater.
2017;55(7):453-459. Published online 2017 Jul 4
DOI:
https://doi.org/10.3365/KJMM.2017.55.7.453
Abstract
Extensive studies of the metastable structures in beta Ti alloys have investigated the ambiguity of the unstable phase. Their microstructural characteristics have been observed to have a modulated structure, and spot satellites of diffraction in TEM, however the formation mechanisms have not been successfully interpreted because of the resolution limit.....
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Crossref 2
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